alien_0 = {'color':'green','points':5}
print(alien_0['color'])


new_points = alien_0['points']
print(new_points)

alien_0['x_pos'] = 0
alien_0['y_pos'] = 25

print(alien_0)

del alien_0['points']
print(alien_0)


for key,value in alien_0.items():
    print('key is ', key)
    print('value is ',value)

for key in alien_0.keys():
    print(key.title())

for key in sorted(alien_0.keys()):
    print(key.title())

for value in alien_0.values():
    print(value)

for value in set(alien_0.values()):
    print(value)

alien_1 = {'color':'green','points':5}
alien_2 = {'color':'yellow','points':10}
alien_3 = {'color':'red','points':15}

aliens = [alien_1,alien_2,alien_3]
for alien in aliens:
    print(alien)
